DOCSLIB.ORG

Baird's Sparrow, Ammodramus Bairdii

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Baird's Sparrow, Ammodramus Bairdii COSEWIC Assessment and Status Report on the Baird’s Sparrow Ammodramus bairdii in Canada SPECIAL CONCERN 2012 COSEWIC status reports are working documents used in assigning the status of wildlife species suspected of being at risk. This report may be cited as follows: COSEWIC. 2012. COSEWIC assessment and status report on the Baird’s Sparrow Ammodramus bairdii in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. x + 32 pp. (www.registrelep-sararegistry.gc.ca/default_e.cfm). Previous report(s): COSEWIC. Unpublished draft report. 1996. COSEWIC assessment and status report on the Baird’s Sparrows Ammodramus bairdii in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vi + 16 pp. Production note: COSEWIC would like to acknowledge Andrew Horn for writing the status report on Baird’s Sparrow Ammodramus bairdii in Canada, prepared under contract with Environment Canada. This report was overseen and edited by Jon McCracken, Co-chair of the COSEWIC Birds Specialist Subcommittee. For additional copies contact: COSEWIC Secretariat c/o Canadian Wildlife Service Environment Canada Ottawa, ON K1A 0H3 Tel.: 819-953-3215 Fax: 819-994-3684 E-mail: COSEWIC/[email protected] http://www.cosewic.gc.ca Également disponible en français sous le titre Ếvaluation et Rapport de situation du COSEPAC sur le Bruant de Baird (Ammodramus bairdii) au Canada. Cover illustration/photo: Baird's Sparrow — photo courtesy Sharon Stiteler. Her Majesty the Queen in Right of Canada, 2012. Catalogue No. CW69-14/22-2012E-PDF ISBN 978-1-100-20703-2 Recycled paper COSEWIC Assessment Summary Assessment Summary – May 2012 Common name Baird’s Sparrow Scientific name Ammodramus bairdii Status Special Concern Reason for designation Canada supports about 60% of the breeding population of this prairie songbird. The species was common and perhaps even abundant historically. It suffered declines stemming from agricultural conversion of its native prairie habitat across the Great Plains. There is good evidence for population declines in recent decades, but the species is difficult to monitor effectively, and information on short-term population trends is relatively weak. Loss and degradation of its specialized grassland habitat, on both its breeding and wintering grounds, are believed to pose the most significant threats. Evidence of long-term population declines, coupled with ongoing threats to habitat, are the primary reasons for elevating the status of this species from Not at Risk to Special Concern. Occurrence Alberta, Saskatchewan, Manitoba Status history Designated Threatened in April 1989. Status re-examined and designated Not at Risk in April 1996. Status re- examined and designated Special Concern in May 2012. iii COSEWIC Executive Summary Baird’s Sparrow Ammodramus bairdii Wildlife Species Description and Significance The Baird’s Sparrow is a secretive grassland sparrow, distinguished from other sparrows by “moustache” marks on its yellowish-ochre face, a necklace of thin streaks across its breast, and a song that usually ends in a wiry, musical trill. As a range- restricted species of the northern prairies, it is a valuable grassland indicator for that region. Distribution The Baird’s Sparrow breeds from southern Alberta, Saskatchewan and southwest Manitoba, south to Montana, Wyoming, and South Dakota. Canada encompasses about 45% of its breeding range, and is home to an even greater proportion of the global population. Baird’s Sparrows winter from southern Arizona, New Mexico, and Texas south to north central Mexico. Habitat This species mainly breeds in large patches of mixed grass and fescue prairie with sparse shrubs, moderate grass heights, and some litter. These features can sometimes be met by non-native habitats, but breeding success can be poor in some of these habitats, such as tame hay and croplands. Over 75% of native grassland in the Baird’s Sparrow’s breeding range has been destroyed since the 1800s, mostly converted to cropland. Habitat destruction, degradation, and fragmentation continue across the species’ range. Biology Baird’s Sparrows likely breed in their first year and live about 3 years. They nest in late May through July, raising an average of 1.5 young during each of the one or two breeding attempts they have each year. About half of nests fail, with most lost to a variety of avian and mammalian predators. Birds rarely return to the same place to breed each year, but instead settle wherever conditions are suitable for breeding. iv Population Sizes and Trends The global population is estimated from Breeding Bird Survey (BBS) data as 1.2 million individuals (± 50%), of which 60% breed in Canada. The BBS shows a statistically non-significant annual average rate of decline of 2.0% in the population in Canada since 1970 (95% CI: -4.5 to 0.6). However, because Baird’s Sparrows appear to shift their breeding distributions in response to patterns of precipitation, using combined long-term BBS data for Canada and the US is believed to represent a more appropriate source of population trend estimates. This yields a statistically significant decline of 25% (95% CI: -13 to -39) over the past decade. Threats and Limiting Factors The main threats to Baird’s Sparrows are habitat destruction, degradation, and fragmentation, caused by a variety of factors, with energy extraction becoming particularly important recently. Other threats include disruption of natural processes (grazing, fire, and drought), agricultural operations, brood parasitism by cowbirds, pesticides, and climate change. Protection, Status, and Ranks The Baird’s Sparrow is protected under the Canada-US Migratory Birds Convention Act and Manitoba’s Endangered Species Act. It is recognized as being at risk on several non-legal status rankings across its range, including the US Birds of Conservation Concern and the Partners in Flight and Audubon Society Watch Lists. Various programs are in place to conserve native grassland, but less than 25% of the Canadian prairie region is still native grassland, and only 15% of native grassland across this species’ range is protected. v TECHNICAL SUMMARY Ammodramus bairdii Baird’s Sparrow Bruant de Baird Range of occurrence in Canada (province/territory/ocean): Alberta, Saskatchewan, Manitoba Demographic Information Generation time 2-3 yrs - Estimated based on other small passerines. Is there an estimated continuing decline in number of mature individuals? Yes Estimated percent of continuing decline in total number of mature Decline, but not individuals within 5 years. calculated - Insufficient short-term trend data are available Estimated percent reduction in total number of mature individuals over the 25% (95% CI range: last 10 years. 13%-39%) - Estimated from an interpolation of range-wide, long-term Breeding Bird Survey (BBS) data. Inferred percent reduction in total number of mature individuals over the Unknown (not next 10 years. calculated) - Insufficient trend data are available Suspected percent reduction or increase in total number of mature Unknown (not individuals over any 10-year period, over a time period including both the calculated) past and the future. - Insufficient trend data are available Are the causes of the decline clearly reversible and understood and No ceased? - Understood, but not clearly reversible and not ceased Are there extreme fluctuations in number of mature individuals? No Although local fluctuations can be extreme, these likely represent temporary shifts in occurrence rather than population fluctuation. Extent and Occupancy Information Estimated extent of occurrence 410,000 km² Index of area of occupancy (IAO). > 2,000 km² Is the total population severely fragmented? No Number of locations Unknown Is there an observed continuing decline in extent of occurrence? No Is there an observed continuing decline in index of area of occupancy? Unknown, but likely given population decline Is there an observed, inferred, or projected continuing decline in number of Not applicable populations? Is there an observed, inferred, or projected continuing decline in number of Unknown locations? Is there an observed continuing decline in the area, extent and quality of Yes (rate unknown) habitat? Are there extreme fluctuations in number of populations? Not applicable Are there extreme fluctuations in number of locations? No Are there extreme fluctuations in extent of occurrence? No Are there extreme fluctuations in index of area of occupancy? No vi Number of Mature Individuals (in each population) Population N Mature Individuals Total 715,000 (350,000- 1,100,000) Quantitative Analysis Probability of extinction in the wild is at least 20% within 20 years or 5 No analysis done generations, or 10% within 100 years. Threats (actual or imminent, to populations or habitats) Grassland habitat destruction, degradation and fragmentation on both the breeding grounds and wintering grounds; disruption of natural processes (grazing, fire, drought); nest losses stemming from agricultural operations; heightened brood parasitism; pesticides; and climate change. Rescue Effect (immigration from outside Canada) Status of outside population(s)? Declining; the long-term population trend in the US is -3.5%/year for the period 1988-2009 (95% CI: -5.5, -1.3). Is immigration known or possible? Yes Would immigrants be adapted to survive in Canada? Yes Is there sufficient habitat for immigrants in Canada? Yes, but limited and declining Is rescue from outside populations likely? Unlikely, because of declines in the US
Load more

Recommended publications
  • The First Central American Record of White-Throated Sparrow Zonotrichia Albicollis
    Cotinga 26 The first Central American record of White-throated Sparrow Zonotrichia albicollis Oliver Komar,Adri de Gelder†, Kerem A. Boyla, George Angehr, Philip Balderamos and Gary Allport Received 22 August 2005; final revision accepted 22 December 2005 Cotinga 26(2006): 43–45 Reportamos un vagabundo de Gorrión Gorjiblanco Zonotrichia albicollis en el cayo Half Moon, a 73 km al sureste de la Ciudad de Belice, siendo el primer registro de esta especie norteamericana para Belice y para América Central. El ave apareció en la isla pequeña al mismo tiempo que se encontraban varias aves transeuntes que migraban hacía el norte. Especulamos que el gorrión hizo una parada durante su migración después de invernar más al sur. On 18 May 2005, we visited tiny Half Moon Caye, darker grey breast and cheeks. Other field marks at the edge of Lighthouse Reef, 73 km south-east of clearly noted were the streaked brown back, brown Belize City, Belize, in the western Caribbean. The wings with two indistinct wingbars, long brown, island covers just c.18 ha; it has sandy wooded slightly notched tail, pale grey rear underparts, thickets on the western four-fifths, and open, buffy flanks and pink legs. It occasionally gave a coconut Cocos nucifera-shaded beach on the eastern characteristic very high tseeet. end. The caye harbours a nesting colony of Red- The sparrow often sought the shade of young footed Booby Sula sula and Magnificent coconut palms or piles of dried palm fronds. Frigatebird Fregata magnificens. Although it picked frequently amongst the sand, we At 07h45, near the Belize Audubon reserve were unable to see if the bird found food, although headquarters on the north-facing beach at the east some seeds from the sparse beach grass and other end of the island (17°12’N 87°32’W), AdG found a plants, as well as small ants and other insects, largish sparrow on drying coconut fronds between probably were in the sand.
    [Show full text]
  • Grasshopper Sparrow,Ammodramus Savannarum Pratensis
    COSEWIC Assessment and Status Report on the Grasshopper Sparrow Ammodramus savannarum pratensis pratensis subspecies (Ammodramus savannarum pratensis) in Canada SPECIAL CONCERN 2013 COSEWIC status reports are working documents used in assigning the status of wildlife species suspected of being at risk. This report may be cited as follows: COSEWIC. 2013. COSEWIC assessment and status report on the Grasshopper Sparrow pratensis subspecies Ammodramus savannarum pratensis in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. ix + 36 pp. (www.registrelep- sararegistry.gc.ca/default_e.cfm). Production note: COSEWIC acknowledges Carl Savignac for writing the status report on the Grasshopper Sparrow pratensis subspecies, Ammodramus savannarum pratensis in Canada, prepared with the financial support of Environment Canada. This report was overseen and edited by Marty Leonard, Co-chair of the COSEWIC Birds Specialist Subcommittee. For additional copies contact: COSEWIC Secretariat c/o Canadian Wildlife Service Environment Canada Ottawa, ON K1A 0H3 Tel.: 819-953-3215 Fax: 819-994-3684 E-mail: COSEWIC/[email protected] http://www.cosewic.gc.ca Également disponible en français sous le titre Ếvaluation et Rapport de situation du COSEPAC sur le Bruant sauterelle de la sous- espèce de l’Est (Ammodramus savannarum pratensis) au Canada. Cover illustration/photo: Grasshopper Sparrow pratensis subspecies — photo by Jacques Bouvier. Her Majesty the Queen in Right of Canada, 2014. Catalogue No. CW69-14/681-2014E-PDF ISBN 978-1-100-23548-6 Recycled paper COSEWIC Assessment Summary Assessment Summary – November 2013 Common name Grasshopper Sparrow - pratensis subspecies Scientific name Ammodramus savannarum pratensis Status Special Concern Reason for designation In Canada, this grassland bird is restricted to southern Ontario and southwestern Quebec.
    [Show full text]
  • SAVANNAH SPARROW Passerculus Sandwichensis Non-Breeding Visitor, Vagrant P.S
    SAVANNAH SPARROW Passerculus sandwichensis non-breeding visitor, vagrant P.s. sandwichensis Group Savannah Sparrows breed throughout N America and winter S to the Caribbean and n. C America. Vagrants have reached Europe, ne. Asia, and Japan (Cramp and Perrins 1994b, AOU 1998). One was observed on Kure, Northwestern Hawaiian Islands, 29 Nov-6 Dec 1977 (Rauzon 1978) and another was observed for two hours and photographed on Tern I, French Frigate 3 Oct 1980 (HRBP 1099). An "unidentified American sparrow" reported from Midway 20 Sep 1995 may also have been a Savannah Sparrow. Up to 22 subspecies of Savannah Sparrow have been named (Pyle 1997b, Clement et al. 2016), The individuals on Kure and French Frigate cannot be placed to subspecies, although the description and photograph indicate the widespread and expected P.s. sandwichensis group that breeds throughout most of N America and is the most migratory (AOU 1998). Within this group, the nominate subspecies (sandwichensis) and anthinus, each breeding in Alaska and the Aleutian Islands and migrating to California and w. Mexico, would be the most likely to occur in the Hawaiian Islands; the description and photograph can be considered consistent with these two subspecies but do not eliminate other subspecies within the group. Dole (1869, 1879) and Sclater (1871) listed Savannah Sparrow ("Emberiza sandwicensis") and Golden-crowned Sparrow for Hawaii but this was in error, apparently based on Dole's confusing the Sandwich Islands and Latham's "Sandwich Sound" (Prince William Sound) in Alaska (Rothschild 1900, Medway 1981). Acronyms and Abbreviations Literature cited Citation: Pyle, R.L., and P.
    [Show full text]
  • L O U I S I a N A
    L O U I S I A N A SPARROWS L O U I S I A N A SPARROWS Written by Bill Fontenot and Richard DeMay Photography by Greg Lavaty and Richard DeMay Designed and Illustrated by Diane K. Baker What is a Sparrow? Generally, sparrows are characterized as New World sparrows belong to the bird small, gray or brown-streaked, conical-billed family Emberizidae. Here in North America, birds that live on or near the ground. The sparrows are divided into 13 genera, which also cryptic blend of gray, white, black, and brown includes the towhees (genus Pipilo), longspurs hues which comprise a typical sparrow’s color (genus Calcarius), juncos (genus Junco), and pattern is the result of tens of thousands of Lark Bunting (genus Calamospiza) – all of sparrow generations living in grassland and which are technically sparrows. Emberizidae is brushland habitats. The triangular or cone- a large family, containing well over 300 species shaped bills inherent to most all sparrow species are perfectly adapted for a life of granivory – of crushing and husking seeds. “Of Louisiana’s 33 recorded sparrows, Sparrows possess well-developed claws on their toes, the evolutionary result of so much time spent on the ground, scratching for seeds only seven species breed here...” through leaf litter and other duff. Additionally, worldwide, 50 of which occur in the United most species incorporate a substantial amount States on a regular basis, and 33 of which have of insect, spider, snail, and other invertebrate been recorded for Louisiana. food items into their diets, especially during Of Louisiana’s 33 recorded sparrows, Opposite page: Bachman Sparrow the spring and summer months.
    [Show full text]
  • A Comprehensive Multilocus Assessment of Sparrow (Aves: Passerellidae) Relationships ⇑ John Klicka A, , F
    Molecular Phylogenetics and Evolution 77 (2014) 177–182 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Short Communication A comprehensive multilocus assessment of sparrow (Aves: Passerellidae) relationships ⇑ John Klicka a, , F. Keith Barker b,c, Kevin J. Burns d, Scott M. Lanyon b, Irby J. Lovette e, Jaime A. Chaves f,g, Robert W. Bryson Jr. a a Department of Biology and Burke Museum of Natural History and Culture, University of Washington, Box 353010, Seattle, WA 98195-3010, USA b Department of Ecology, Evolution, and Behavior, University of Minnesota, 100 Ecology Building, 1987 Upper Buford Circle, St. Paul, MN 55108, USA c Bell Museum of Natural History, University of Minnesota, 100 Ecology Building, 1987 Upper Buford Circle, St. Paul, MN 55108, USA d Department of Biology, San Diego State University, San Diego, CA 92182, USA e Fuller Evolutionary Biology Program, Cornell Lab of Ornithology, Cornell University, 159 Sapsucker Woods Road, Ithaca, NY 14950, USA f Department of Biology, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146, USA g Universidad San Francisco de Quito, USFQ, Colegio de Ciencias Biológicas y Ambientales, y Extensión Galápagos, Campus Cumbayá, Casilla Postal 17-1200-841, Quito, Ecuador article info abstract Article history: The New World sparrows (Emberizidae) are among the best known of songbird groups and have long- Received 6 November 2013 been recognized as one of the prominent components of the New World nine-primaried oscine assem- Revised 16 April 2014 blage. Despite receiving much attention from taxonomists over the years, and only recently using molec- Accepted 21 April 2014 ular methods, was a ‘‘core’’ sparrow clade established allowing the reconstruction of a phylogenetic Available online 30 April 2014 hypothesis that includes the full sampling of sparrow species diversity.
    [Show full text]
  • Ultimate Bolivia Tour Report 2019
    Titicaca Flightless Grebe. Swimming in what exactly? Not the reed-fringed azure lake, that’s for sure (Eustace Barnes) BOLIVIA 8 – 29 SEPTEMBER / 4 OCTOBER 2019 LEADER: EUSTACE BARNES Bolivia, indeed, THE land of parrots as no other, but Cotingas as well and an astonishing variety of those much-loved subfusc and generally elusive denizens of complex uneven surfaces. Over 700 on this tour now! 1 BirdQuest Tour Report: Ultimate Bolivia 2019 www.birdquest-tours.com Blue-throated Macaws hoping we would clear off and leave them alone (Eustace Barnes) Hopefully, now we hear of colourful endemic macaws, raucous prolific birdlife and innumerable elusive endemic denizens of verdant bromeliad festooned cloud-forests, vast expanses of rainforest, endless marshlands and Chaco woodlands, each ringing to the chorus of a diverse endemic avifauna instead of bleak, freezing landscapes occupied by impoverished unhappy peasants. 2 BirdQuest Tour Report: Ultimate Bolivia 2019 www.birdquest-tours.com That is the flowery prose, but Bolivia IS that great destination. The tour is no longer a series of endless dusty journeys punctuated with miserable truck-stop hotels where you are presented with greasy deep-fried chicken and a sticky pile of glutinous rice every day. The roads are generally good, the hotels are either good or at least characterful (in a good way) and the food rather better than you might find in the UK. The latter perhaps not saying very much. Palkachupe Cotinga in the early morning light brooding young near Apolo (Eustace Barnes). That said, Bolivia has work to do too, as its association with that hapless loser, Che Guevara, corruption, dust and drug smuggling still leaves the country struggling to sell itself.
    [Show full text]
  • Ecuador: HARPY EAGLE & EAST ANDEAN FOOTHILLS EXTENSION
    Tropical Birding Trip Report Ecuador: HARPY EAGLE & East Andean Foothills Extension (Jan-Feb 2021) A Tropical Birding custom extension Ecuador: HARPY EAGLE & EAST ANDEAN FOOTHILLS EXTENSION th nd 27 January - 2 February 2021 The main motivation for this custom extension was this Harpy Eagle. This was one of an unusually accessible nesting pair near the Amazonian town of Limoncocha that provided a worthy add-on to The Andes Introtour in northwest Ecuador that preceded this (Jose Illanes/Tropical Birding Tours). Guided by Jose Illanes Birds in the photos within this report are denoted in RED, all photos were taken by the Tropical Birding guide. 1 www.tropicalbirding.com +1-409-515-9110 [email protected] Tropical Birding Trip Report Ecuador: HARPY EAGLE & East Andean Foothills Extension (Jan-Feb 2021) INTRODUCTION This custom extension trip was set up for one person who simply could not get enough of Ecuador…John had just finished Ecuador: The Andes Introtour, in the northwest of the country, and also joined the High Andes Extension to that tour, which sampled the eastern highlands too. However, he was still missing vast chunks of this small country that is bursting with bird diversity. Most importantly, he was keen to get in on the latest “mega bird” in Ecuador, a very accessible Harpy Eagle nest, near a small Amazonian town, which had been hitting the local headlines and drawing the few birding tourists in the country at this time to come see it. With this in mind, TROPICAL BIRDING has been offering custom add-ons to all of our Ecuador offerings (for 2021 and 2022) to see this Harpy Eagle pair, with only three extra days needed to see it.
    [Show full text]
  • Ammodramus Bairdii): a Technical Conservation Assessment
    Baird’s Sparrow (Ammodramus bairdii): A Technical Conservation Assessment Prepared for the USDA Forest Service, Rocky Mountain Region, Species Conservation Project June 9, 2006 David A. Wiggins, Ph.D. Strix Ecological Research 1515 Classen Drive Oklahoma City, OK 73106 Peer Review Administered by Society for Conservation Biology Wiggins, D.A. (2006, June 9). Baird’s Sparrow (Ammodramus bairdii): a technical conservation assessment. [Online]. USDA Forest Service, Rocky Mountain Region. Available: http://www.fs.fed.us/r2/projects/scp/assessments/ bairdssparrow.pdf [date of access]. ACKNOWLEDGMENTS Brenda Dale, Stephen Davis, Michael Green, and Stephanie Jones provided reprints and unpublished information on Baird’s sparrows – this assessment would not have been possible without their previous research work and helpful assistance. Greg Hayward and Gary Patton gave many useful tips for enhancing the structure and quality of this assessment. I also thank Rick Baydack, Scott Dieni, and Stephanie Jones for providing thorough reviews that greatly improved the quality of the assessment. AUTHOR’S BIOGRAPHY David Wiggins developed an early interest in ornithology. During his high school years, he worked as a museum assistant under Gary Schnell and George Sutton at the University of Oklahoma. He later earned degrees from the University of Oklahoma (B.Sc. in Zoology), Brock University (M.Sc. - Parental care in Common Terns, under the supervision of Ralph Morris), and Simon Fraser University (Ph.D. - Selection on life history traits in Tree Swallows, under the supervision of Nico Verbeek). This was followed by a National Science Foundation Post-doctoral fellowship at Uppsala University in Sweden, where he studied life history evolution in Collared Flycatchers, and later a Fulbright Fellowship working on the reproductive ecology of tits (Paridae) in Namibia and Zimbabwe.
    [Show full text]
  • 21 Sep 2018 Lists of Victims and Hosts of the Parasitic
    version: 21 Sep 2018 Lists of victims and hosts of the parasitic cowbirds (Molothrus). Peter E. Lowther, Field Museum Brood parasitism is an awkward term to describe an interaction between two species in which, as in predator-prey relationships, one species gains at the expense of the other. Brood parasites "prey" upon parental care. Victimized species usually have reduced breeding success, partly because of the additional cost of caring for alien eggs and young, and partly because of the behavior of brood parasites (both adults and young) which may directly and adversely affect the survival of the victim's own eggs or young. About 1% of all bird species, among 7 families, are brood parasites. The 5 species of brood parasitic “cowbirds” are currently all treated as members of the genus Molothrus. Host selection is an active process. Not all species co-occurring with brood parasites are equally likely to be selected nor are they of equal quality as hosts. Rather, to varying degrees, brood parasites are specialized for certain categories of hosts. Brood parasites may rely on a single host species to rear their young or may distribute their eggs among many species, seemingly without regard to any characteristics of potential hosts. Lists of species are not the best means to describe interactions between a brood parasitic species and its hosts. Such lists do not necessarily reflect the taxonomy used by the brood parasites themselves nor do they accurately reflect the complex interactions within bird communities (see Ortega 1998: 183-184). Host lists do, however, offer some insight into the process of host selection and do emphasize the wide variety of features than can impact on host selection.
    [Show full text]
  • Henslow's Sparrow
    Table of Contents I. Introduction………………………………………………………… 1 II. Species Account……………………………………………………. 1 A. Taxonomy Description…………………………………………. 1 1. Original Description…………………………………….. 1 2. Taxonomic Description…………………………………. 3 B. Historical and Current Distribution……………………………... 3 1. Description of Habitats and Locations of Occurrence….. 3 2. Known Collection Sites………………………………… 5 3. Associated Species and Communities………………...... 5 C. Population Sizes and Abundance………………………………. 7 D. Reproduction…………………………………………………… 8 E. Food and Feeding Requirements……………………………...... 8 F. Other Pertinent Information and Summary…………………...... 9 III. Ownership of Properties…………………………………………… 9 IV. Potential Threats…………………………………………………… 10 V. Protective Laws…………………………………………………...... 12 A. Federal………………………………………………………...... 12 B. State…………………………………………………………...... 12 VI. Recovery………………………………………………………….... 12 A. Objectives………………………………………………………. 12 B. Recovery Criteria……………………………………………..... 12 VII. Narrative Outline…………………………………………………... 13 1. Additional Species Information Needs…………………………. 13 2. Management Activities for Maintaining Species Populations and for Species Recovery………………………………………....... 14 VIII. Costs of Recovery Plan Implementation…………………………… 15 Table 1 Henslow’s sparrow densities for sites of occurrence………………. 18 Figure 1……………………………………………………………………………..... 20 Literature Cited………………………………………………………………………. 21 i Acknowledgements We would like to thank all of the individuals who assisted with or provided information for the completion of this plan. Most
    [Show full text]
  • State of California the Resources Agency Department of Fish and Game Wildlife Management Division a SURVEY of the BELDING's SAVA
    State of California The Resources Agency Department of Fish and Game Wildlife Management Division A SURVEY OF THE BELDING'S SAVANNAH SPARROW (Passerculus sandwichensis beldingi) IN CALIFORNIA, 1991 Robert James and Doreen Stadtlander U.S. Fish and Wildlife Service Southern California Field Station Carlsbad Office November 1991 NONGAME BIRD AND MAMMAL SECTION REPORT, 91-05 FINAL REPORT TO Department of Fish and Game 1416 Ninth Street Sacramento, CA 95814 CONTRACT FG0429 (FY90/91) A SURVEY OF THE BELDING'S SAVANNAH SPARROW (Passerculus sandwichensis beldingi) IN CALIFORNIA, 1991 Survey partially supported by California Endangered Species Tax Check-off Account, FY 1990-91 November 1991 by the U.S. Fish and Wildlife Service Southern California Field Station Carlsbad office Brooks Harper, Office Supervisor Robert James and Doreen Stadtlander, Authors Richard Zembal, Federal Projects Coordinator State of California The Resources Agency Department of Fish and Game A SURVEY OF THE BELDING'S SAVANNAH SPARROW (Passerculus sandwichensis beldingi) IN CALIFORNIA, 1991 by the U.S. Fish & Wildlife Service Southern California Field Station Carlsbad Office Brooks Harper, Office Supervisor Robert James and Doreen Stadtlander, Authors Richard Zembal, Federal Projects Coordinator November 1991 ABSTRACT Thirty-four marshes were surveyed during the period of 5 March-28 June 1991 for the territorial Belding's Savannah sparrow (Passerculus sandwichensis beldingi), which is currently a state-endangered and federal category two candidate subspecies. ("Category two" species lack sufficient information to support a federal listing proposal as endangered or threatened). Populations were found in 27 of those marshes from Goleta Slough south to Tijuana Marsh on the Mexican border of southern California.
    [Show full text]
  • Bird Monitoring Study Data Report Jan 2013 – Dec 2016
    Bird Monitoring Study Data Report Jan 2013 – Dec 2016 Jennifer Powell Cloudbridge Nature Reserve October 2017 Photos: Nathan Marcy Common Chlorospingus Slate-throated Redstart (Chlorospingus flavopectus) (Myioborus miniatus) CONTENTS Contents ............................................................................................................................................................................... 2 Tables .................................................................................................................................................................................... 3 Figures................................................................................................................................................................................... 6 1 Project Background ................................................................................................................................................... 7 1.1 Project Goals ................................................................................................................................................... 7 2 Locations ..................................................................................................................................................................... 8 2.1 Current locations ............................................................................................................................................. 8 2.3 Historic locations ..........................................................................................................................................10
    [Show full text]